Potted PWM Solar Controllers

Regulates current flow from the solar panels to the battery and prevents overcharging to optimize your truck battery’s lifespan. With a weather resistant enclosure, the this 20-amp controller is ideal for industrial applications, and is compatible with 12 and 24 volt battery banks.

SKU: GP-MPPT-85-20 Category: Tag:

MODEL: GP-PC-10-IP68/GP-PC-20-IP68

Use a solar controller to maintain a battery’s life by limiting the current flowing into it once it is fully charged.

  • Pulse Width Modulation (PWM) charging
  • Three stage charging to protect your battery bank
  • Automatically detects 12 or 24 volt battery bank
  • Accepts up to 350 watts with a 12 volt bank, and up to 700 watts with a 24 volt bank
  • Easy to read LED status: charge status, battery state of charge, and load status
  • Industrial IP68 rated potted enclosure with IP21 terminals
  • 5 year warranty





Nominal System Voltage

12/24V (Auto Detection)

Max Solar Array Current



Battery Voltage Range

12V System: 10.5 – 15.5

24V System: 21 – 31

Max. Solar Panel Input Voltage

12V System: 30V

24V System: 50V

Max. Peak Solar Panel Wattage

12V System: 175W

24V System: 350W

12V System: 350W

24V System: 700W

Operating Consumption


Temp. Compensation

12V System: -13mV/ºF (-24mV/ºC)

24V System: -26mV/ºF (-48mV/ºC)

Operating Temperature

– 40 to 140ºF (-40 to 60ºC)


99% N.C.

Dimensions (H x W x D):

3.94 x 2.4 x 0.79 in (100 x 61 x 20 mm)


5.6 oz (160 grams)

Maximum Wire Gauge:

#8 AWG


5 year


IP68 (Enclosure), IP21 (Terminals)


CE, RoHS, UL1741, CSA 22.2 No. 107.1-01

Safety Features

Battery Reverse Polarity, Solar Array Reverse Polarity, Over Temperature, Over Current